Treating Loose Stool And Constipation In Dogs - Sweet potatoes or pumpkin (plain sweet potatoes/not candied yams &/or plain pumpkin, not pumpkin pie filling) It only takes a couple of tblsps mixed into dry food/bland diet. Freeze the rest in ice cubes/store in freezer for the next tummy upset! Toddler baby food sweet potatoes work well too. Some dogs even like them frozen as treats!